Tartaric acid [ho2cch(oh)ch(oh)co2h] is an important compound in the history of stereochemistry. purification of a mixture of all the possible stereoisomers of tartaric acid by chromatography, using an achiral stationary phase, gives two fractions. one fraction has a melting point of 204 °c and the other has a melting point of 140 °c. both fractions have no detectable optical rotation. the higher melting fraction can be resolved into two compounds with [a] 25 = +12° and [a].25 = -12° (ii) draw the fischer projections for each of the isomers of tartaric acid [ho2cch(oh)ch(oh)co2h]. (3 marks) what isomers are present in each of the two fractions separated by achiral chromatography? (2 marks) why does purification of a mixture of all the possible isomers of tartaric acid by chromatography, using an achiral stationary phase, give only two fractions? spectral analysis (ir, uv, nmr) indicated that each fraction was a "pure" compound. explain. (3 marks) (iii)

Microtubular fibers that assist in the movement of chromosomes during nuclear division in conjunction with proteins, makes up the small and large organelle pieces that assemble prior to translation three-base nucleotide sequence that can complementarily pair with the functional transcript, allowing a particular material to be brought to a ribosome particular time in the cell cycle when the cell’s systems determine if the cellular conditions are appropriate to continue through the cycle time in the cell’s cycle when proteins are made and organelles are duplicated enzyme that allows proper nucleotide bonding during transcription specific dna sequence which will initiate gene transcription division of the cell’s cytoplasm specific bond that forms between two amino acids when a carboxyl group binds to a amino group three-base sequence that does not code for a particular amino acid a paired organelle which facilitates the formation of movement microtubules time in the cell’s cycle when the microtubular structures exert an equal pressure on the cell’s genetic material

An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have

Why is silver chloride is an ionic compound